Eruption of Okmok
Jun 1943 · 53.43° N, 168.13° W
Mount Okmok is a volcano on eastern Umnak Island, in the central-eastern Aleutian Islands of Alaska. Part of the Aleutian Volcanic Arc, it was formed by the subduction of the oceanic Pacific Plate under the North American Plate. Okmok is a large shield volcano capped by a 10-kilometer (6.2 mi) wide caldera.
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What the records say
- When
- Jun 1943
- Kind
- Volcanic eruption
- Coordinates
- 53.43° N, 168.13° W
- Vei
- 1
- Vent
- SW part of caldera (Cone A)
- Dated by
- Observations: Reported
- Volcano number
- 311290
- Eruption number
- 19844
Mount Okmok
Volcano on eastern Umnak Island in the central-eastern Aleutian Islands of Alaska
Mount Okmok is a volcano on eastern Umnak Island, in the central-eastern Aleutian Islands of Alaska. Part of the Aleutian Volcanic Arc, it was formed by the subduction of the oceanic Pacific Plate under the North American Plate. Okmok is a large shield volcano capped by a 10-kilometer (6.2 mi) wide caldera. The caldera contains numerous cinder cones, their lava flows, and a few lakes.
From Wikipedia, CC BY-SA · Read the article
Nearby in time and place
The source
- Smithsonian GVP Volcanoes of the World: Holocene eruptionsGlobal Volcanism Program, Smithsonian InstitutionSmithsonian terms of use: personal, educational and non-commercial use, with creditGlobal Volcanism Program, Smithsonian Institution: Volcanoes of the World v5.3, https://doi.org/10.5479/si.GVP.VOTW5-2025.5.3Source page